What comes around goes around.
A saying that says you reap what you sow.
Both refer to you karma and you can fool some of the people some of the time but you can't fool all of the people all of the time.
Plainly said treat people right and the way you want to be treated or it will all catch up to you.
Having watched the Lex Luthers of the world try to rule I always watched as they fell and were found out for the people they truly were.
It was not fun nor did it feel good at the end because along the way innocent people suffered and were collateral damage.
Ultimately the Lex Luthers lost and suffered in the end, they will always exist . The best way to battle the dark side is to stay focused on the positive and not be bullied.
Do what is right..you know deep down what is right..stay on that path.